<?php

$jige = 75;
$css = 80;
$js = 70;
$wangye = 60;
$avg = ($css + $js + $wangye )/3;
$avg = round($avg, 2)
?>
<html lang="en">
    <head>
    <meta charset="UIF-8">
    <title>Document</title>
    </head>
    <body>
        <p>abc</p>
        平均分数及格分为：<?php echo $jige ;?></br>
        样式表:<?php echo $css ;?></br>
        JS:<?php echo $js ;?></br>
        网页设计:<?php echo $wangye ;?></br>
        你的平均分:<?php echo $avg ;?><br/>
        你的分数:<?php if ($avg >= $jige) : ?>
        <span style="color:green">及格</span>;
        <?php  else :?>
        <span style="color:red">不及格</span>
        <?php   endif;?>
    </body>
</html>